664 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. X 



180. CuKETis BULis, Doubleday and Hewitson. 



The form malayica, Moore, was common in the Upper Chindwin 

 from April to June, aad also at the foot of the hills ; also from Manipur. 

 181. Zephyrus letha, n. sp. (Plate A, Fig. 7, $.) 



Habitat : North Chin Hills, Burma. 



Expanse : ^,1*6 inches. 



Description : Male. Upperside, both loings rich metallic green, 

 with a marginal black border. Foreiving has the black border narrow, 

 of even width throughout ; the apical half of the costal margin also very 

 narrowly black. Ilindwing with the costal margin broadly black, the 

 black border to the outer margin of moderate width, twice as broad as 

 in the forewing. Cilia white. Tail black, tipped with white. 

 Underside, both wings pale fawn-colour glossed with silvery. 

 Forewing with an outer discal slightly curved white band, attenuated 

 posteriorly, extending from the costa to the first median nervule, 

 inwardly bordered with fuscous; a broad submarginal fuscous band, 

 anteriorly faint, terminating at the submedian nervure in two dark 

 spots, narrowly margined throughout its entire length with white ; 

 a marginal white line followed by a fine blackish anteciliary line ; 

 the disco-cellular nervules faintly marked with fuscous. Ilindwing^ 

 a broad white discal band from the costa to the first median nervule 

 passing beyond the discoidal cell, inwardly margined with fuscous and 

 continued to the abdominal margin in a broken V-shaped line ; a 

 double row of submarginal white spots, outwardly concave, the outer 

 row conspicuously, the inner row obsoletely ; followed by a black- 

 centred yellow spot in the first median interspace, beyond which is 

 a black spot at the extreme anal angle inwardly marked with yellow, 

 which is continued narrowly up the abdominal margin ; a marginal 

 white line, followed by an anteciliary blackish line ; the disco-cellular 

 nervules faintly marked with fuscous. Abdomen dark, paler beneath ; 

 thorax densely clothed with greenish-white and pure white hair above 

 and below respectively. 



Mr. de Niceville has kindly compared the type with its nearest 

 allies and writes to me as follows : 



" Appears to be most closely allied to Z. syla, Kollar, and Z. birupa, 

 Moore, from both of which the outer black band to the forewing on the 

 upperside being half as wide will distinguish Z. letlia ; the markings 



